As far I have studied Morphology, it has given a wide understanding of words and their formation. Starting from the minimal meaningful unit, the morpheme which creates unlimited lexicon stock of a language to the other Morphological concepts such as base or root, affixation, compounding, conversion and Morphological analysis. To be precise, I believe that Morphology has enabled me to perceive the words-formation process conveniently. In order to understand any word, examine the number of morphemes and attachment of prefixes and suffixes. Prefixes are added to the beginning of a word and modify its meaning accordingly. For instance, the word happy is a single morpheme and when we attach a prefix, "Un" to it, we get a word with totally opposite meaning, Unhappy which means not happy. In addition, suffixes follow the base and are of a great grammatical importance for these change the grammatical category of words or parts of speech.To illustrate, the verb kill becomes a noun when er is attached to its front. For example:
1. kill+er=killer. (From a verb to a noun)
2. Happy+ly= Happily (form an adjective to an adverb)
Hence, it is clear that how affixation can bring about a semantic as well as syntactic variation in words.